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Old 10-10-2012, 05:09 PM
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need help with strange transmission problem

It is hard to explain so here goes. Today on my way home, I stopped at a stop sign. When I accelerated everything was fine until I got to 35mph. All of a sudden it feels like it downshifts hard and the brakes are applied. I let off the gas and at about 25mph it feels like it downshifts again. I have to slow down to 15mph and it goes back to normal. If i accelerate again it will go up to 35 then does it again. If I try to accelerate after it does this the turbo spools up and the engine tries but can not speed up. It seems like the TC is locked up the whole time. I put it in 2nd gear and drove the rest of the way home at 25mph. When I got out of the truck I could smell tranny fluid. Please help me.

Last edited by schemi; 10-10-2012 at 05:18 PM.
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Old 10-10-2012, 05:20 PM
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this is a 2001 f350 by the way. The only mods I have done are tymar intake, wicked wheel and bellowed up pipes. The OD light is not flashing.
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Old 10-10-2012, 09:25 PM
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being an 01, i'd put $$$ on, that the diode took a dump..(inside trans). Google 7.3 tranny diode, you'll see what im talk'n about....unfortunately, only way to repair is a new/rebuilt trans.
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Old 10-10-2012, 10:14 PM
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I have been reading about that. I haven't read of anyone else with the same symptoms. how can I tell that is the problem for sure?
Thank you
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Old 10-11-2012, 07:56 AM
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Quote:
Originally Posted by timmyboy76 View Post
being an 01, i'd put $$$ on, that the diode took a dump..(inside trans). Google 7.3 tranny diode, you'll see what im talk'n about....unfortunately, only way to repair is a new/rebuilt trans.
I'm thinking the same thing also.
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Old 10-13-2012, 10:27 AM
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To remove the transmission do I need to remove the downpipe? should I remove the transfer case or take it out together? I dont have a tranny jack. I am going to call around an see if I can find a rental. Any ideas if I cant find one? One more question. Do the tc bolts only line up one way? On my 74 dodge the tc bolts only line up one way to the flexplate.
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Old 10-13-2012, 05:51 PM
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i dont think so. I've seen wherethey just remove the entire assy...trans and transfer. Gotta get a trans jack bud, that pigs' HEAVY and ackward.
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Old 10-14-2012, 06:43 PM
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I guarantee that timmyboy is right...same thing happened to my 01'... Get ready for a tranny rebuild.


Sent from my Autoguide iPad app
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Old 10-14-2012, 06:43 PM
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I left the downpipe n dropped the transfer case with the tranny...


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